An explosion-welded compound steel plate is two steels bonded into one: a hard, abrasion- and corrosion-resistant layer on the working face, and a softer, tougher steel backing. The weld is metallurgical, not adhesive, so the plate behaves as one piece under load.
The split of duties is the point. The hard face takes sliding abrasion and galling; the unhardened backing absorbs impact, carries the bolt loads and holds the plate flat against the housing. A common proportion is roughly 25 % hard layer and 75 % backing, though the drawing decides the actual clad ratio.
Chinese buyers often call this family 复合耐磨衬板, 双金属复合板 or 牌坊耐磨板. Working-face steels include T8, T10, 3Cr13 and 4Cr13 on an ordinary carbon-steel base; hardness commonly falls in the 55-64 HRC range. The trade name is not the specification - the layer material and hardness on the drawing are.
Work-roll and backup-roll bearing seats, mill windows and housing liners.
Slide ways and guide surfaces that need a hard, low-friction face on a tough backing.
Sintering and rolling-mill positions where impact and sliding abrasion arrive together.
Worn compound-steel plates replaced to drawing rather than scrapping the housing.
| Working face | T8, T10, 3Cr13, 4Cr13, or the OEM-specified layer material |
|---|---|
| Face hardness | Typically 55-64 HRC for this family; take the exact value from the specification |
| Backing steel | Ordinary carbon steel or the specified tough backing |
| Clad ratio | Layer thickness as a share of total thickness |
| Flatness | Machined flat to drawing; state the tolerance and measuring method |
| Fixing | Bolt holes, countersunk holes, grooves, keyways |
| Size | Length, width, thickness and hole pattern to drawing |
We make BT-CW bimetal composite wear plate: a hard wear layer on a tough structural backing, cut, formed and drilled to drawing. For a position specified as explosion-welded compound steel, we compare the working-face material, hardness, clad ratio, backing and flatness with what our process can hold, and say plainly whether it is a fit. If the duty needs a construction we do not make, we will tell you rather than substitute quietly.
For lower-demand sliding wear - chutes, hoppers, transfer points - BT-CW is the more direct answer. For guide surfaces where friction and galling matter as much as abrasion, see 305K slide plates.
Further reading: Wear-Resistant Composite Plates - specifying, fitting and checking →
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